送交者: JFF 于 2011-01-05, 18:41:27:

回答: X-ray diffraction 由 blobfish 于 2011-01-05, 17:55:31:

• with incresing N, your error bar cannot be smaller - blobfish (126 bytes) 2011-01-05, 19:16:40 (533762)

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